• Determination of Mercury Ion in Contaminated Soil by Rhodamine B Hydrazide
  • Kim, Kyungtae;Park, Junboum;
  • Department of Civil & Environmental Engineering, Seoul National University;Department of Civil & Environmental Engineering, Seoul National University;
  • 형광화학센서를 이용한 용출기반 토양 수은 오염조사
  • 김경태;박준범;
  • 서울대학교 건설환경공학부;서울대학교 건설환경공학부;
Abstract
Rhodamine B Hydrazide as a novel fluorescent and colorimetric probe exhibiting remarkably selective fluorescence enhancement toward Hg2+ ion over other 16 metal ions is herein introduced. The probe reacts with Hg2+ ion followed by its spirolactam ring-opening to give a remarkable enhancement of absorption maximum at 550 nm as well as an enhanced fluorescence intensity at 580 nm in aqueous media. Upon titration with Hg2+ ion in various concentration of 10~200 uM, we found that the probe shows a marked color change from colorless to pink, enabling naked-eye detection toward mercury ion. In addition, in the presence of Hg2+ ion, the probe gave rise to change from non-florescence to strong orange fluorescence (Off-On) with a good linearity of R2=0.97. This preliminary results demonstrate that the fluorescent chemosensor we herein introduced can open a new strategy for marked selective and sensitive detection of mercury ions in contaminated soil containing various metal ions.

Keywords: Mercury detection;Fluorescence chemosensor;Soil contamination;Extraction;

References
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This Article

  • 2016; 21(3): 1-5

    Published on Jun 30, 2016

  • 10.7857/JSGE.2016.21.3.001
  • Received on Feb 1, 2016
  • Revised on Feb 23, 2016
  • Accepted on Mar 2, 2016